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Usually using the Google OpenId works fine, thousands of times a day, then it will start intermittently going wrong and timing out for an hours or so (some requests will validate but not all). Repeated validation will eventually work. Error messages are: Event code: 200000 Event message: No OpenID endpoint found. : https://www.google.com/accounts/o8/id Sequence contains no elements Adding in log4net yields: DotNetOpenAuth.Yadis: Error while performing discovery on: "https://www.google.com/accounts/o8/id": DotNetOpenAuth.Messaging.ProtocolException: Error occurred while sending a direct message or getting the response. ---> System.Net.WebException: The operation has timed out at System.Net.HttpWebRequest.GetResponse() at DotNetOpenAuth.Messaging.StandardWebRequestHandler.GetResponse (HttpWebRequest request, DirectWebRequestOptions options) in c:\...\Dot...Core\Messaging\StandardWebRequestHandler.cs:line 127 --- End of inner exception stack trace --- at DotNetOpenAuth.Messaging.StandardWebRequestHandler.GetResponse (HttpWebRequest request, DirectWebRequestOptions options) in c:\...\Dot...Core\Messaging\StandardWebRequestHandler.cs:line 175 at DotNetOpenAuth.Messaging.UntrustedWebRequestHandler.GetResponse (HttpWebRequest request, DirectWebRequestOptions options) in c:\...\Dot...Core\Messaging\UntrustedWebRequestHandler.cs:line 250 at DotNetOpenAuth.Yadis.Yadis.Request (IDirectWebRequestHandler requestHandler, Uri uri, Boolean requireSsl, String[] acceptTypes) in c:\...\Dot...OpenId\Yadis\Yadis.cs:line 172 at DotNetOpenAuth.Yadis.Yadis.Discover (IDirectWebRequestHandler requestHandler, UriIdentifier uri, Boolean requireSsl) in c:\...\DotNetOpenAuth.OpenId\Yadis\Yadis.cs:line 63 at DotNetOpenAuth.OpenId.UriDiscoveryService.Discover (Identifier identifier, IDirectWebRequestHandler requestHandler,

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